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最近の落下例を含む隕石における宇宙線生成放射性核種 : コンドライトの宇宙線照射履歴への制約
http://hdl.handle.net/2297/32422
http://hdl.handle.net/2297/3242276cde560-c6db-4c76-9e91-e37b34ca1e3d
名前 / ファイル | ライセンス | アクション |
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INET-PR-INOUE-M-13.pdf (1.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-05 | |||||
タイトル | ||||||
タイトル | 最近の落下例を含む隕石における宇宙線生成放射性核種 : コンドライトの宇宙線照射履歴への制約 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Cosmogenic radionuclides in meteorites including recently fallen ones : Constraints on the exposure history of chondrites | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
井上, 睦夫
× 井上, 睦夫× 小村, 和久 |
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書誌情報 |
地球化学 = Geochemical Journal 巻 35, 号 1, p. 13-25, 発行日 2001-03-20 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0386-4073 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00141280 | |||||
出版者 | ||||||
出版者 | 日本地球化学会 = Geochemical Society of Japan | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Activities of cosmogenic nuclides have been numerously reported for extraterrestrial material, meteorites (especially chondrites). In addition to noble gases, cosmogenic radionuclides (e.g., ^<22>Na, ^<26>Al, ^<46>Sc, ^<53>Mn, ^<54>Mn and ^<60>Co) have also kept important records of their history during last ten million years. For example, low ^<60>Co activity observed in most chondrites (<30 dpm/kg) suggests that their preatmospheric radii are less than 〜30 cm, and activities of ^<22>Na and ^<26>Al reflect various irradiation conditions by cosmic-ray such as shielding effect, exposure age and cosmic-ray flux with time and space. Terrestrial age (Antarctic meteorites; H group, <0.4×10^6y; L, LL,<10^6y estimated from ^<26>Al, ^<36>Cl and ^<14>C activities) as well as exposure age (H, 3 -40×10^6y; L, LL, 3 -50×10^6y) shows different distributions between H- and L-, LL-group chondrites, which have possibly preserved the information about breakage of parent body and so on. The combined data of exposure age and activities of cosmogenic nuclides also give constraints on the complex history of chondrites (e.g., multi-stage irradiation as a result of fragmentation) until the collision with the Earth. Recently, with the progress of nondestructive γ-ray techniques, activities of relatively short-lived nuclides such as ^<46>Sc, ^<22>Na implied the irradiation conditions just before fall to the Earth. In this paper, "the evolution history of chondrites after separation from the parent body" is represented from activities of cosmogenic radionuclides in meteorites including recently fallen ones. | |||||
権利 | ||||||
権利情報 | 日本地球化学会 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.geochem.jp/ | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://ci.nii.ac.jp/naid/110008680014 |